protected void writeNavigationProperties()

in lib/server-core/src/main/java/org/apache/olingo/server/core/serializer/json/ODataJsonSerializer.java [542:598]
55 lines of code
23 McCabe index (conditional complexity)

  protected void writeNavigationProperties(final ServiceMetadata metadata,
      final EdmStructuredType type, final Linked linked, final ExpandOption expand, final Integer toDepth,
      final Set<String> ancestors, final String name, final JsonGenerator json) 
          throws SerializerException, IOException, DecoderException {
    if (isODataMetadataFull) {
      for (final String propertyName : type.getNavigationPropertyNames()) {
        final Link navigationLink = linked.getNavigationLink(propertyName);
        if (navigationLink != null) {
          json.writeStringField(propertyName + constants.getNavigationLink(), navigationLink.getHref());  
        }
        final Link associationLink = linked.getAssociationLink(propertyName);
        if (associationLink != null) {
          json.writeStringField(propertyName + constants.getAssociationLink(), associationLink.getHref());  
        }
      }
    }
    if ((toDepth != null && toDepth > 1) || (toDepth == null && ExpandSelectHelper.hasExpand(expand))) {
      final ExpandItem expandAll = ExpandSelectHelper.getExpandAll(expand);
      for (final String propertyName : type.getNavigationPropertyNames()) {
        final ExpandItem innerOptions = ExpandSelectHelper.getExpandItemBasedOnType(expand.getExpandItems(), 
            propertyName, type, name);
        if (innerOptions != null || expandAll != null || toDepth != null) {
          Integer levels = null;
          final EdmNavigationProperty property = type.getNavigationProperty(propertyName);
          final Link navigationLink = linked.getNavigationLink(property.getName());
          ExpandOption childExpand = null;
          LevelsExpandOption levelsOption = null;
          if (innerOptions != null) {
            levelsOption = innerOptions.getLevelsOption();
            childExpand = levelsOption == null ? innerOptions.getExpandOption() : new ExpandOptionImpl().addExpandItem(
                innerOptions);
          } else if (expandAll != null) {
            levels = 1;
            levelsOption = expandAll.getLevelsOption();
            childExpand = new ExpandOptionImpl().addExpandItem(expandAll);
          }

          if (levelsOption != null) { 
            levels = levelsOption.isMax() ? Integer.MAX_VALUE : levelsOption.getValue();
          }
          if (toDepth != null) {
            levels = toDepth - 1;
            childExpand = expand;
          }
                             
          writeExpandedNavigationProperty(metadata, property, navigationLink,
            childExpand, levels,
            innerOptions == null ? null : innerOptions.getSelectOption(),
            innerOptions == null ? null : innerOptions.getCountOption(),
            innerOptions == null ? false : innerOptions.hasCountPath(),
            innerOptions == null ? false : innerOptions.isRef(),
            ancestors, name,
            json);
        }
      }
    }
  }